Honda Odyssey 2004. Manual — part 505
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01
01
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Ref. No.
Tool Number
Description
Qty
22-348
Navigation System
Special Tools
07PAZ-0010100
SCS Service Connector
1
07LAJ-PT3020A
Test Harness (’00-’01 models)
1
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*01
S0X4A82J36100000000DAAT00
22-349
Component Location Index
DISPLAY UNIT
AUDIO UNIT
GPS ANTENNA
NAVIGATION UNIT
VEHICLE SPEED PULSE (VSP) SENSOR
NAVIGATION SERVICE
CHECK CONNECTOR
Removal/Installation, page 22-385
Removal/Installation,
page 22-342
Removal/Installation,
page 22-385
Removal/Installation, page 22-384
Replacement, page 22-384
Forced starting of display,
page 22-383
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General Operation
Anti-theft Feature
Symptom Diagnosis
Self-Inertial Navigation Limitations
Global Positioning System (GPS) Limitations
22-350
Navigation System
General Troubleshooting Information
for the navigation system operating procedures.
The navigation system has a coded theft protection
circuit. Be sure to get the customer’s 4-digit anti-theft
security code number before;
• Disconnecting the battery.
• Disconnecting the navigation unit 8P connector.
• Removing the NAVIGATION (10A) fuse from the
passenger’s under-dash fuse/relay box.
After service, reconnect power to the navigation unit,
and turn the ignition switch ON (II). Enter the 4-digit
anti-theft security code, then select ‘‘Done’’.
When replacing the navigation unit, be sure to give the
customer the new anti-theft security code.
Certain circumstances and system limitations will result
in occasional vehicle positioning errors. Some
customers may think this indicates a problem with the
navigation system when, in fact, the system is normal.
Keep the following items in mind when interviewing
customers about symptoms of the navigation system.
The limitations of the self-inertial portion of the
navigation system (the yaw rate sensor and the vehicle
speed signal) can cause some discripancies between
the vehicle’s actual position and the indicated vehicle
position (GPS vehicle position). However, if GPS signals
cannot be received, you must tune the vehicle position
manually.
The following circumstances may cause vehicle
positioning errors:
• Moving the vehicle with the navigation system on the
vehicle stopped, such as by ferry or tow truck, or if
the vehicle is spun on a turn table.
• Tire slippage, changes in tire rolling diameters, and
some driving situations may cause discrepancies in
travel distances. Examples of this include:
– Continuous tire slippage on a slippery surface.
– Driving with snow chains mounted.
– Abnormal tire pressure.
– Incorrect tire size.
– Frequent lane changes across a wide highway.
– Continuous driving on a straight or gently curving
highway.
• Tolerances in the system and map inaccuracies
sometimes limit how precisely the vehicle position is
indicated. Examples of this include:
– Driving on roads not shown on the map (map
matching is not possible).
– Driving on a road that winds in one direction, such
as a loop bridge, an interchange, or a spiral parking
garage.
– Driving on a road with a series of sharp hair-pin
turns.
– Driving near a gradual highway exit or transition.
– Driving on one of two close parallel roads.
– Making many 90 degree turns.
The GPS cannot detect the vehicle’s position during the
following instances:
• For the first 5 to 10 minutes after reconnecting the
battery.
• When the satellite signals are blocked by tall
buildings, mountains, tunnels, large trees, or large
trucks.
• When the GPS antenna is blocked by something on
the dashboard.
• When there is no satellite signal output (signal output
is sometimes stopped for satellite servicing).
• When the satellite signals are blocked by the
operation of some electronic after-market accessories.
The accuracy of GPS is reduced during these instances:
• When only two satellite signals can be received
(Three satellite signals are required for accurate
positioning).
• When the satellite control centers are experiencing
problems.
• When driving near high tension power lines.
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Refer to the Honda Navigation System manual
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LCD Display Unit Limitations
Symptom Duplication
Service Precautions
After Servicing Procedures-Map Matching
22-351
• In cold temperatures, the display may stay dark for
the first 2 or 3 minutes until it warms up.
• When the display is too hot because of direct summer
sunlight, it will remain dark until the temperature
drops.
• When the humidity is high and the interior
temperature is low, the display may appear cloudy.
The display will clear up after some use.
• Fingerprints on the touch panel may sometimes be
noticeable because of the panel’s low-reflection
coating. When cleaning the panel, wipe it gently with
a soft cloth. To avoid scratching the panel, do not rub
too hard.
• The touch panel is an infrared system, so there is no
need to press hard. If a touch switch does not
function immediately, shift your finger slightly on the
switch, and touch it again.
• When the symptom can be duplicated, follow the self-
diagnostic procedures (picture diagnosis mode) and
the appropriate troubleshooting procedures.
• When the symptom does not reappear or only
reappears intermittently, ask the customer about the
conditions when the symptom occured.
– Try to establish if outside interference may have
been the cause.
– Try to duplicate the symptom under the same
conditions the customer was experiencing.
– Vibration, temperature extremes, and moisture
(dew, humidity) are factors that are difficult to
duplicate.
– Inspect the vehicle for after-market electronic
devices (vehicle locators, amp, radar detectors, etc)
that may be hidden.
• Before disconnecting the battery, make sure you
have the anti-theft codes for the radio and the
navigation system, and write down the frequencies
for the radio’s preset buttons.
• When the battery is disconnected, the clock is reset to
‘‘0:00’’. The clock will reset to the correct time after
the system receives the GPS satellite signals.
• After reconnecting the battery, you have to wait to get
the initial signal from the satellite. It will take about 10
minutes.
• Before returning the vehicle to the customer, enter
the radio anti-theft code, then enter the customer’s
radio station presents.
NOTE: If the anti-theft code is incorrectly entered three
times, the vehicle will need to be left outside away from
tall buildings, trees, etc, with the engine running for one
hour before the correct code can be entered again.
• Park the vehicle in an area where the GPS satellite
signals will be unobstructed, and check the satellite
mark on the display.
• Drive the vehicle 1 mile before entering a destination
and confirm the road being used is displayed at the
bottom of the screen (map matched).
• Enter the dealer address and confirm the system
routes and performs normally.
• Clear any previous destinations that may have been
entered for testing purposes.
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